Oscar-winning actress Melissa Leo is set to star in “The Mannequin,” a thriller written and directed by Sean Byrne. All three outlets describe the project as a serial killer procedural and characterize it as a violent, high-stakes thriller. The film is being produced under Studiocanal’s new genre label, Sixth Dimension, which is launching the title to international buyers at the Cannes Film Festival. Studiocanal plans to begin production in the summer. The companies involved are also set to handle global sales at Cannes, with the film’s theatrical release scheduled across Studiocanal’s territories, including the UK, France, Germany, and additional European markets such as Benelux and Poland, according to outlet reporting. The Hollywood Reporter and Variety also frame Sixth Dimension as introducing the film to buyers at Cannes this week. Byrne is noted across sources for his work on “Dangerous Animals,” which is cited as a point of reference for his thriller style. Casting details beyond Leo are not provided in the sources.